// JScript 文件
   function tips_pop(){
    var MsgPop=document.getElementById("winpop");
    var popH=parseInt(MsgPop.style.height);//将对象的高度转化为数字
    if (popH==0){
    MsgPop.style.display="block";//显示隐藏的窗口
    show=setInterval("changeH('up')",2);
    }
    else {
    hide=setInterval("changeH('down')",2);
    }
    }
    function changeH(str) {
    var MsgPop=document.getElementById("winpop");
    var popH=parseInt(MsgPop.style.height);
    if(str=="up"){
    if (popH<=120){
    MsgPop.style.height=(popH+4).toString()+"px";
    }
    else{
    clearInterval(show);
    }
    }
    if(str=="down"){
    if (popH>=4){
    MsgPop.style.height=(popH-4).toString()+"px";
    }
    else{
    clearInterval(hide);
    MsgPop.style.display="none";  //隐藏DIV
    }
    }
    }
    window.onload=function(){//加载
    document.getElementById('winpop').style.height='0px';
    setTimeout("tips_pop()",800);//3秒后调用tips_pop()这个函数
    }